11.24: Two wave pulses travel to the right toward a rigid boundary as shown. f pwn4),:4 zi zxyls0:)gmr qlAfter reflection of the triangular pulse, the pulses will interfere. Which one of the following pictures best represents the superposition of the pulses when the centers of the individual pulses coinc):iylmx g zn fqs04rw,)pl:4zide?

  08.30: A light beam passes through the) o6)kx+wi6 6+ismec82 fxcto+qn b uh air and strikes the surface of a plastic block. Which pair of statements 2 utbhcm iw xo++8fek c+q6ixn6)o)s6 correctly describes the phase changes for the reflected wave and the transmitted wave?

  12.02: A ray of light passes straight downward through the point knwtq e5kv;:0m+ pgv7;;ifa- + mgg5laxx h 2u labeled B in the diagram shown. f2:-mm apn5;tk0qh l; v x7+x 5vkgaewgu;g+iThe ray reaches a flat mirror placed at an angle $\Theta$ to the horizontal as shown. Which one of the locations labeled in the figure best represents the point through which the ray reflected from the mirror will pass?

  00.04: Specular reflection occurs whenever light is ijzj(xky/ 3.hdp og07qma0 ;njncident on

  05.18: A student hold a hand mirror to obse,y n0 unk,rrqpk0k :*lrve the back of her head while standing in front of and looking into a wall mirror. If she is standing 4 ft in front of the wall mirror and she holds the hand mirror 1 ft behind her head, she will see the back of her h,r l:qkkukrp n0n* y0,ead how far behind the wall mirror?

  14.25: It is observed that a light ray chang5pj/rq+/y k dbql c,l4es direction when it enters a new material. Which one of the following choices is the y/qkjd 5ql4 b/plr ,c+term best associated with this phenomenon?

  96.19: Light that has wavelength of 50 -z th1u8v2.5yyrex9zukx* f z0 nm in air has wavelength 400 nm in a transparent material. Wht1-.xz kf h9yr2ev8z*z xuuy5 at is the index of refraction of the material?

  98.04: As sound travels from steel into air,2f+3 i1trt3 i vbmt3 vy,k7usr both its speed and its:

  00.01: As a wave moves from one medium to a second medium with a different inde ce(8afw pa41cx of refraction which of the following wave properties would NEV(4 cecpa1faw 8ER change?

  05.47: A sound wave generated from a tuning fork of single freque2 omb.mc,6eiq 2 w802pfdeoyg ncy travels from air (with speed of sound 340 m/s) into rock (with speed of sound 1500 m/s). Which statement is true about the wae0q6b2d,g2e m2 f o wmoyi.p8cvelength and frequency of the sound as it passes from air to rock?

  14.28: A waterproof speaker placed at th:h .wnzg5s-j he bottom of a swimming pool emits a sound wave that tra. j:5wgs -zhhnvels toward the surface of the water. In the water, the sound wave has a frequency $f_{water}$, wavelength $\lambda_{water}$ , and wave speed $v_{water}$ . When the sound wave enters the air it has a frequency $f_{air}$ ,wavelength $\lambda_{air}$, and wave speed $v_{air}$ . Which one of the following relationships correctly compares the frequencies, wavelengths, and wave speeds of the waves in the air and water?

  02.33: A short burst of white light strikes a rectangular glasojfb4/7u1b bblymghed+fy : /a/l 3p1s block with an angle of incidence obaf11/ by:mygd/7bojb3 lehp/4l u+f f $0^0$. Which color of transmitted light would be the first to emerge from the opposite side?

  96.02: A beam of light is di ,pewtix,gle g52 j.9krected toward a point P on a boundary as shown to the right. Which segmgk,x.gi5j wp,t e el29ent best represents the refracted ray?

  98.17: Which diagram best represents what happens to a ray of light enteringl zxgj* ,9.tho vgol g*6at0 hb5,/kwh air from water? Air is at the top g,l,zj6wg5bhho*/ ao90*l hgkt . txvin all diagrams.

  94.11: The critical angle of a material is the angle of innnkb + a8rfd* 6d0og4wcidence for which the angle of refractio0kwrgdf4+8bnao nd *6n is:

  95.12: The principlei h5 v-/x03mytxe 5hmr underlying fiber optics is:

  98.36: The critical angle in a transparent substance surroundegx 6xvn5 awejip4m j0)97 kys;d by air is $30^{\circ}$. The speed of light in
the substance (in multiples of $10^8$ m/s) is most nearly

  01.28: Light travels from material X with an index of refractibq.7wnee)1(ejrp c -bon of n = 1.5 to material Y with an index of refraction of n = 2.0. If the speed of light in material Y is -e)cprn(w jbeb7qe.1v, what is the speed of light in material X?

  03.15: A jeweler can distinguish between a diamond and a piece1rq8now2w -mb5m;uvl5gq-ac6now 0k of glass by observing the critical angle of the light in each material. Glass with an index of refraction of 1.52 has a critical a;wg1mq52qo 8l mvwan06-ckro5 w ub-nngle of $41.1^{\circ}$ while a diamond with an index of refraction of 2.42 would have a critical angle of:

  05.26: Light shines from air into a clear material. 9oo xc+hc* kx1ku48 6zfy6yeaWhen the light makes an angle of incidence e +ey81kc9o yaohxk *xzfuc 664qual to $30.0^{\circ}$, the light refracts at an angle of 1$5.0^{\circ}$. If the light is shone from an angle of incidence of $60.0^{\circ}$, what is the angle of refraction?

  95.40: A Metrologic laser is embedded in a material of index of refracn3eu yzgg*)pjmub,4*: 2e o kdb7ch4 ttion n. The laser beam emerges from the material and hits a target. See the accompanying figure for the position parameters c2 ne :4zk4u)b,tb dmhojpu* g3yge7* of the laser and target. The value of n is:

  95.31: A beam of light passes frf)0arhb0ak * gyu /(tfom medium 1 to medium 2 to medium 3 as shown in the accompanying figure. What is true about the resp g0aa)0(bhf tufkr y*/ective indices of refraction (n1, n2, and n3)?

  00.14: A beam of light passes from medium 1 to medium 2 to m44np a8* 6rojl-snscie9k+l9wi*o qqedium 3 as shown in the diagram. What may be concluded about the three indexes of refraction, n1, 6ac ns8q won4oq+-*ei4 ls9*r 9pkjlin2 and n3?

  97.24: The accompanying diagram shows the path that a p 2;xx9*0vpod +fkjhf light ray takes passing through three transparent materials. The indices of refraction in materials 1, 2, and 3 are n1, n2, and n3, respectively. Which of the following best describes the relation between the indices of refraction? ff9 vkpox0xj+*pd; 2h

  09.34: The diagram below shows the path taken by a monochromatic light rayh54 x7sk - x nbm2dcd dly67yblv00w2f traveling through three medi 0sb xdm7ydk6wlybdlx -7 fc042h52vn a.The symbols $v_1$,$\lambda_1$ , and $f_1$ represent the speed, wavelength, and frequency of the light in Medium 1, respectively. Which of the following relationships for the light in the three media is true?

  99.26: A beam of light traveling ii2:xt ih7 gq;wp/m ks) t95lqqn glass ($n_g$=1.5) strikes a boundary with air ($n_a$ =1.0) at point P.The angle
of incidence is $60^{\circ}$ as shown in the diagram. Which ray would best indicate the beam’s path after point P?

  04.35: A ray of light is d) we-ai92xri -:ni x)k p;ctsyd)z 8aincident on the surface of a rectangular block of glasdkcaz8; -ts2ia ney:)9xd-pr) wii x)s at an angle of $45^{\circ}$. It refracts into the glass and then strikes the side of the block as shown in the diagram. What would be the most likely path of the light after striking the side of the glass block?

  13.27: Light of wavelength 600nm is transmitted from air inihv*i q1y y2/pc2y( uxto a piece of glass. Which one of the labeled arrows best indicates the path of the light ray after iyu /v*icq(yyh2i12px t enters the glass?

  14.44: A ray of monochromatic light enters the right-triangular glass )rxqk3oxj/- x as shown. The glass has an index of refraction of 2.00 and it is surroj)r 3xxk x/q-ounded by air. Which one of the lettered rays shows the path of the light after it exits the glass?